During World War II, in order to bomb German dams, the British developed a "jump bomb". In fact, it is a large barrel, thrown by a bomber on the surface of the water, and the scene is extremely spectacular!
During World War II, the industrial zone was the main military target, and the British targeted the German heavy industrial area, the Ruhr area. After repeated research, the British found that the best way to strike was to blow up the dam, which could cause flooding and cut off the electricity.
But the Germans were also well aware of the importance of dams, and set up anti-aircraft and underwater lightning nets around the dams, blocking almost all possible offensive routes. Moreover, the dam is extremely strong, and if you want to blow it up, you must use a very large charge of bombs.
The British couldn't solve the puzzle until designer Barnes Wallis saw a little boy playing in the water... Here comes the inspiration. Based on the principle of water drifting, the designers quickly developed a projectile body that can bounce on the water - a round barrel of explosives.
The bomb will reach a rotation speed of 500 r/min in advance on the plane, and then be thrown to the surface of the water, causing a huge splash, and then bouncing back into the air to continue to advance... This water drifting action is too close to the surface of the water, neither the range of anti-aircraft fire, nor is it blocked by the underwater interception net.
After the successful development, the British sent 19 heavy bombers to the Ruhr area for bombing missions, although several were shot down because of the difficulty of dropping bombs, but still successfully blew up the dam, so that the Ruhr area suffered the largest flood in history, and dealt a heavy blow to German industrial forces.
